test/bootm.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Tests for bootm routines
   4  *
   5  * Copyright 2020 Google LLC
   6  */
   7
   8 #include <common.h>
   9 #include <bootm.h>
  10 #include <asm/global_data.h>
  11 #include <test/suites.h>
  12 #include <test/test.h>
  13 #include <test/ut.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 #define BOOTM_TEST(_name, _flags)       UNIT_TEST(_name, _flags, bootm_test)
  18
  19 enum {
  20         BUF_SIZE        = 1024,
  21 };
  22
  23 #define CONSOLE_STR     "console=/dev/ttyS0"
  24
  25 /* Test cmdline processing where nothing happens */
  26 static int bootm_test_nop(struct unit_test_state *uts)
  27 {
  28         char buf[BUF_SIZE];
  29
  30         *buf = '\0';
  31         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, true));
  32         ut_asserteq_str("", buf);
  33
  34         strcpy(buf, "test");
  35         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, true));
  36         ut_asserteq_str("test", buf);
  37
  38         return 0;
  39 }
  40 BOOTM_TEST(bootm_test_nop, 0);
  41
  42 /* Test cmdline processing when out of space */
  43 static int bootm_test_nospace(struct unit_test_state *uts)
  44 {
  45         char buf[BUF_SIZE];
  46
  47         /* Zero buffer size */
  48         *buf = '\0';
  49         ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, 0, true));
  50
  51         /* Buffer string not terminated */
  52         memset(buf, 'a', BUF_SIZE);
  53         ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, BUF_SIZE, true));
  54
  55         /* Not enough space to copy string */
  56         memset(buf, '\0', BUF_SIZE);
  57         memset(buf, 'a', BUF_SIZE / 2);
  58         ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, BUF_SIZE, true));
  59
  60         /* Just enough space */
  61         memset(buf, '\0', BUF_SIZE);
  62         memset(buf, 'a', BUF_SIZE / 2 - 1);
  63         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, true));
  64
  65         return 0;
  66 }
  67 BOOTM_TEST(bootm_test_nospace, 0);
  68
  69 /* Test silent processing */
  70 static int bootm_test_silent(struct unit_test_state *uts)
  71 {
  72         char buf[BUF_SIZE];
  73
  74         /* 'silent_linux' not set should do nothing */
  75         env_set("silent_linux", NULL);
  76         strcpy(buf, CONSOLE_STR);
  77         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
  78         ut_asserteq_str(CONSOLE_STR, buf);
  79
  80         ut_assertok(env_set("silent_linux", "no"));
  81         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
  82         ut_asserteq_str(CONSOLE_STR, buf);
  83
  84         ut_assertok(env_set("silent_linux", "yes"));
  85         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
  86         ut_asserteq_str("console=ttynull", buf);
  87
  88         /* Empty buffer should still add the string */
  89         *buf = '\0';
  90         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
  91         ut_asserteq_str("console=ttynull", buf);
  92
  93         /* Check nothing happens when do_silent is false */
  94         *buf = '\0';
  95         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, 0));
  96         ut_asserteq_str("", buf);
  97
  98         /* Not enough space */
  99         *buf = '\0';
 100         ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, 15, BOOTM_CL_SILENT));
 101
 102         /* Just enough space */
 103         *buf = '\0';
 104         ut_assertok(bootm_process_cmdline(buf, 16, BOOTM_CL_SILENT));
 105
 106         /* add at end */
 107         strcpy(buf, "something");
 108         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
 109         ut_asserteq_str("something console=ttynull", buf);
 110
 111         /* change at start */
 112         strcpy(buf, CONSOLE_STR " something");
 113         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
 114         ut_asserteq_str("console=ttynull something", buf);
 115
 116         return 0;
 117 }
 118 BOOTM_TEST(bootm_test_silent, 0);
 119
 120 /* Test substitution processing */
 121 static int bootm_test_subst(struct unit_test_state *uts)
 122 {
 123         char buf[BUF_SIZE];
 124
 125         /* try with an unset variable */
 126         ut_assertok(env_set("var", NULL));
 127         strcpy(buf, "some${var}thing");
 128         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SUBST));
 129         ut_asserteq_str("something", buf);
 130
 131         /* Replace with shorter string */
 132         ut_assertok(env_set("var", "bb"));
 133         strcpy(buf, "some${var}thing");
 134         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SUBST));
 135         ut_asserteq_str("somebbthing", buf);
 136
 137         /* Replace with same-length string */
 138         ut_assertok(env_set("var", "abc"));
 139         strcpy(buf, "some${var}thing");
 140         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SUBST));
 141         ut_asserteq_str("someabcthing", buf);
 142
 143         /* Replace with longer string */
 144         ut_assertok(env_set("var", "abcde"));
 145         strcpy(buf, "some${var}thing");
 146         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SUBST));
 147         ut_asserteq_str("someabcdething", buf);
 148
 149         /* Check it is case sensitive */
 150         ut_assertok(env_set("VAR", NULL));
 151         strcpy(buf, "some${VAR}thing");
 152         ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SUBST));
 153         ut_asserteq_str("something", buf);
 154
 155         /* Check too long - need 12 bytes for each string */
 156         strcpy(buf, "some${var}thing");
 157         ut_asserteq(-ENOSPC,
 158                     bootm_process_cmdline(buf, 12 * 2 - 1, BOOTM_CL_SUBST));
 159
 160         /* Check just enough space */
 161         strcpy(buf, "some${var}thing");
 162         ut_assertok(bootm_process_cmdline(buf, 16 * 2, BOOTM_CL_SUBST));
 163         ut_asserteq_str("someabcdething", buf);
 164
 165         /*
 166          * Check the substition string being too long. This results in a string
 167          * of 12 (13 bytes). We need enough space for that plus the original
 168          * "a${var}c" string of 9 bytes. So 12 + 9 = 21 bytes.
 169          */
 170         ut_assertok(env_set("var", "1234567890"));
 171         strcpy(buf, "a${var}c");
 172         ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, 21, BOOTM_CL_SUBST));
 173
 174         strcpy(buf, "a${var}c");
 175         ut_asserteq(0, bootm_process_cmdline(buf, 22, BOOTM_CL_SUBST));
 176
 177         /* Check multiple substitutions */
 178         ut_assertok(env_set("var", "abc"));
 179         strcpy(buf, "some${var}thing${bvar}else");
 180         ut_asserteq(0, bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SUBST));
 181         ut_asserteq_str("someabcthingelse", buf);
 182
 183         /* Check multiple substitutions */
 184         ut_assertok(env_set("bvar", "123"));
 185         strcpy(buf, "some${var}thing${bvar}else");
 186         ut_asserteq(0, bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SUBST));
 187         ut_asserteq_str("someabcthing123else", buf);
 188
 189         return 0;
 190 }
 191 BOOTM_TEST(bootm_test_subst, 0);
 192
 193 /* Test silent processing in the bootargs variable */
 194 static int bootm_test_silent_var(struct unit_test_state *uts)
 195 {
 196         env_set("bootargs", NULL);
 197         ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SUBST));
 198         ut_assertnull(env_get("bootargs"));
 199
 200         ut_assertok(env_set("bootargs", "some${var}thing"));
 201         ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SUBST));
 202         ut_asserteq_str("something", env_get("bootargs"));
 203
 204         return 0;
 205 }
 206 BOOTM_TEST(bootm_test_silent_var, 0);
 207
 208 /* Test substitution processing in the bootargs variable */
 209 static int bootm_test_subst_var(struct unit_test_state *uts)
 210 {
 211         ut_assertok(env_set("silent_linux", "yes"));
 212         ut_assertok(env_set("bootargs", NULL));
 213         ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
 214         ut_asserteq_str("console=ttynull", env_get("bootargs"));
 215
 216         ut_assertok(env_set("var", "abc"));
 217         ut_assertok(env_set("bootargs", "some${var}thing"));
 218         ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
 219         ut_asserteq_str("some${var}thing console=ttynull", env_get("bootargs"));
 220
 221         return 0;
 222 }
 223 BOOTM_TEST(bootm_test_subst_var, 0);
 224
 225 /* Test substitution and silent console processing in the bootargs variable */
 226 static int bootm_test_subst_both(struct unit_test_state *uts)
 227 {
 228         ut_assertok(env_set("silent_linux", "yes"));
 229         env_set("bootargs", NULL);
 230         ut_assertok(bootm_process_cmdline_env(BOOTM_CL_ALL));
 231         ut_asserteq_str("console=ttynull", env_get("bootargs"));
 232
 233         ut_assertok(env_set("bootargs", "some${var}thing " CONSOLE_STR));
 234         ut_assertok(env_set("var", "1234567890"));
 235         ut_assertok(bootm_process_cmdline_env(BOOTM_CL_ALL));
 236         ut_asserteq_str("some1234567890thing console=ttynull", env_get("bootargs"));
 237
 238         return 0;
 239 }
 240 BOOTM_TEST(bootm_test_subst_both, 0);
 241
 242 int do_ut_bootm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 243 {
 244         struct unit_test *tests = UNIT_TEST_SUITE_START(bootm_test);
 245         const int n_ents = UNIT_TEST_SUITE_COUNT(bootm_test);
 246
 247         return cmd_ut_category("bootm", "bootm_test_", tests, n_ents,
 248                                argc, argv);
 249 }